Re: [syzbot] [ext4?] WARNING in inode_set_cached_link

[syzbot]

syzbot has bisected this issue to:

commit 6408a56623761f969537b421d99f045a4cc955b9
Author: Mateusz Guzik <mjguzik@xxxxxxxxx>
Date:   Tue Feb 4 21:32:07 2025 +0000

    vfs: sanity check the length passed to inode_set_cached_link()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=152ffca4580000
start commit:   808eb958781e Add linux-next specific files for 20250206
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=172ffca4580000
console output: https://syzkaller.appspot.com/x/log.txt?x=132ffca4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=88b25e5d30d576e4
dashboard link: https://syzkaller.appspot.com/bug?extid=2cca5ef7e5ed862c0799
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=161241b0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16ee80e4580000

Reported-by: syzbot+2cca5ef7e5ed862c0799@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 6408a5662376 ("vfs: sanity check the length passed to inode_set_cached_link()")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection